Fan Belts slipping
 

I just replaced all of my belts. I bought them from M-B. One of the power steering belts is loose and slipping bad. Is there any way to adjust them? I couldn't find any way to adjust them. There is adjustments for alternator and a/c compressor.
Car is a 1978 450 SL.

Thanks,
Don Solomon
Durango, CO

This is a real pain. If I remember correctly this is one of the old PS pumps without the allen on the back middle right of the housing looking at the engine from the front. If you have the allen, then losen the three bolts and tighten the allen bolt. If you do not (almost definitely you do not) then you release all the bolts on the housing enough to move the ps pump then you get a large screw driver (3 feet like a crow bar) and push the PS pump away from the crankshaft (do not use the distributer as the lever) then when it is tight hold it and tighten your belts.
m